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STOP ANB4 WASTE 000K.

Patented Apr. 6, i886.

UNITED STATES PATENT @Erica DANIEL J. MURPHY AND HAMILTON F. LOV, OF MANCHESTER, NEW HAMPSHIRE; SAID LOW' ASSIGNOR TO SAID MURPHY.

STOP AND WASTE COCK.

SPECIFICATION forming part of Letters Patent No. 339,316, dated April 6, 1886.

Application filed Sepfexnher 14, 1885. Serial No. 177,015. (No model.)

To c/.ZZ whom it may concern,.-

Beit known that we, DANIEL J. MURPHY and HAMILTON F. LOW, citizens of the United States, residing at Manchester, in the county of Hillsborough and State of N ew Hampshire,4

have invented certain new and useful Improvements in Stop and XV aste Cocks, of which the following is a specification.

Our invention relates to stop cocks with automatic Waste.

The object of our invention is to provide in a stop-cock an outlet for the escape of the Water contained in the pipes above the said cock, said outlet to be opened and closed automatically by the operation of the valve in said cool; in such manner as that when the cock is open the wasteout-let will be automatically closed, and vice versa.

Our invention consists in the peculiar form of connecting the valve-stem to the valve, whereby the said stein is permitted to rise onequarter inch (more or less) before lifting the said valve.

Our invention further consists of the appli cation of two independent springs for accomplishing the above purpose, one exerting its force upon the valve-stein and the other upon the valve.

Our invention further consists in providing a Waste-chamber in said cock above the valvechamber.

Our invention finally consists in providing in the valvesteni a central Waste chamber or passage having its inlet so located as to connect with the valve-chamber, and its outlet with the Waste-chamber when said valve is closed, thus allowing the standing water above said cock to pass back through the valvechamber, the valve-stem, and the Waste-cham` ber, and to escape by means of the waste-pipe connected to said waste-chamber.

In the accompanying drawings, forming part of this specification, Figure l represents a central vertical sectional elevation oi'ourimproved cock having its valve closed and the Waste-passages open. Fig. 2 represents a vertical section of the top of the improved cock, showing the valve-stem as when raised suiiiciently to have carried the Waste-inlet to said stein within the washer directly under the disk which separates the valve-chamber from the waste chamber. Fig. 3 shows a detailed elevation of the pressure-valve, and Fig. 4 a detached elevation of thc disk or plate dividing the valve-chamber from the Waste-chamber.

Like reference-letters indicate corresponding parts throughout the various views.

rlhe cock A. is provided with an inlet, a, and an outlet, a', both located at its bottom, and to its top is threadeda cap, B, to which a Waste-pipe may be connected at 11. To this cap B is iitted a disk7 C, having on its upper side a hollow hub, o, in the cylindrical sides of which are provided several holes, c', connecting with the chamber c2. rIhe valve-stem D passes up through the disk C and the cap B, its lower end being secured to the valve E by a pin, F, which passes through said valvestem and an elongated opening, e', made :in the hub c of said valve for the purpose of allowing the said stem a limited vertical 1novement before it shall have raised the said valve. rllhe hub e may be provided with a spindle, e2, which, with said hub, Will enter the valve-stem and act as a guide for said valve in its motion to and from its seat f. Tivo spiral springs are placed within the valvecharnber and surrounding the valve-stem,one within the other, the smaller spring7 G, resting upon the ange d, formed on the bottoni of the valve-stein, and the larger spring, H, resting upon the valve E, the tops of both bearing against a Washer, I, which is made circular and provided with two annular lianges on its lower side, the smaller flange, i, projecting slightly within the spring G, while the larger ilange, i', projects down around the top of the spring H.

The valvcsteni D is provided with a corr centric vertical chamber, d', an orifice, di, connecting with its lower end, and orifice d3 with its upper end, the location of this vertical chamber and its orifices being such as that when the said valve-stein is resting upon the valve E and said valve is seated the orifice d2 is in position to receive the Waste Water from the pipe leading from and above the cock, and the orifice d" is in position to dis charge said Water through the apertures c', formed in the hub c of the disk C,into the Waste-chamber, and thence out through the aperture b of the cap I), as clearly shown in Fig. l of the drawings.

ICO

For the purpose of packing the valve-stem suitable washers, J J', formed of leather or rubber, are placed one below the disk C, between it and the metal-spring seat or washer I, and another above the convex top of the hub c of said disk and between it and the concavity formed on the under side of the top of cap B. The washer .I is made large enough to cover the top of the cock A, and serve also as a packing for the cap B by reason of its compression by the disk C when said cap is screwed down.

Various means may be provided for operating the valve-stem, one of which is shown in Figs. 1 and 2, in which a lever, K, is fulcrumcd at 7c to the valvestem, said lever being provided with two rolls, L, pivoted thereto on opposite sides of and equidistant from said valve-stem, and with an arm, c, by which it may be raised either by hand or by means of a rod, which may be connected thereon at k2. The said rolls L when in their normal position bear upon the top of the cap B, and when the arm k is raised that roll at the other side of the valve stem will travel toward said stem, and the said stem will also be raised.

The advantage of our improved cock over those in ordinary use is the combined action of the waste-duct and the pressure-valve, the operation of which is as follows: Vhen the valve-stem D is raised by the lever K or other mechanism, the waste-duct through said valvestem, consisting of passages d2 d d3, is iirst closed by reason of the oriiice d2 having entered the piece I, the further movement of the said valve-stem upward causing the pin F to bear against the top of the elongated opening e of the valve E and raise said valve, thus admitting water through the inlet a to the valve-chamber, when it will make its exit at a. By letting go the lever K the valve is immediately closed and the waste-duct opened. Thus the waste-duct is always closed before water can be admitted to the cock.

Having described our invention, what we claim, and desire to secure by Letters Patent, is-

l. In a stop and waste cock, the combination, with a valve-stem having a concentric chamber running lengthwise of the same, and inlet and outlet orifices connecting therewith for the passage of waste water, and a spring exerting a downward pressure thereon, of a disk-valve movably connected to the lower end of said valve-stem, and a spring exerting a downward pressure thereon, all constructed and operating in the manner and for the purpose set forth.

2. In a stop and waste cock constructed substantially as described, the combination, with a valve-stem and a spring exerting a downward pressure thereon, of a disk-valve movably connected to the lower end of said valve-stem, and a spring exerting a downward pressurel thereon, and suitable wastepassages adapted to close automatically with the upward motion of said valve-stem and before the admission of water to said cock, as and in the manner shown and described.

In testimony whereof we affix our signatures in presence of two witnesses.

DANIEL J. MURPHY. HAMILTON F. LOW. Witnesses:

.,I. B. THURsToN, B. IV. WALKER. 

